#3050
Altough LayoutDataRef is touched from layout, we don't use DOMRefCell in it becasuse
it's expected to manipulate in layout task.
Source-Repo: https://github.com/servo/servo
Source-Revision: f5e8df9dac9330f2818906c471ed05f5975828c6
r? @Ms2ger, @jdm
The parser is now a JS-managed object and we use hooks in html5ever to trace its internal state. This should be memory-safe even if arbitrary JavaScript can run during a parse. Please let me know if you think of a reason it wouldn't be!
I think the likely outcome of a garbage collection during parsing is a dynamic `RefCell` borrow failure, but I'm going to look into that after this lands. It should be safe to trace the parser while it's mutably borrowed, as long as it's not shared between threads, so we can probably switch to `UnsafeCell`.
Source-Repo: https://github.com/servo/servo
Source-Revision: 8d3b107568ab965b518b8003b702a5db993fa7d0
